Attachment for testing-machines.



G. S.. EVANS.

ATTACHMENT FOR TESTING MACHINES.

APPLICATION FILED JULY. 9, 1914.

1,120,461 I Patented Dec! 8, 1914;

' lllllllllll l m wummmwwn Z WITNESSES 1 19 @W "ATTORNEYS m/mvroa "GEORGE snrrmus EVANS, or LENOIR eITY, T NNESSEE.

' "harassment ron rnsrmemaenmn's.

' Beitknown that I, Gnome S. Evans, a

.. eit izen of'the United States, and a resident "of Lenoir City, in the county of London andQState' of Tennessee, have invented a new {and useful Im' rovement in- Attach-- following is a specification.

.arrangementsherein described and claimed.

a device by means of which a testingvma -vments for Testing, achin'es,l'offwhich the My invention relates to improvements in v attachments for testing machines, more-par ticularly those machines which are designed to test the hardness of metals, and it 'consists in the combinations, constructions and 'An' object of my' invention is to provide Y chine such as that used for transverse tensile and. compression testing is made}'use of in testing hardness.

A further object of invention provide a device by meansfofhardobject of ny invention is to royide a novel ness may be tested according 'to' these called Brinell ball impression test.

By the use of the attachment, a further form. of attachment in whic either a ball may be used as the impression forming memberyor a cone may beused in lieu of the ball, the ball or cone holder-providing for the ready change from one to the other.

My invention is illustrated in the accompany g drawing forming part of this .applicati'on, in which-- V Figure 1 is a perspective view showing the attachment applied toa testing machine, Fig. 2 is abottom plan view of the ball holder and support, Fig. 3 is a section along the line 33-of Fig. 2, Fig. i is a bottom plan view of a modified form of impression member, Fig.5 is a section on the l1ne 5-5 of Fig. 4:, Fig.- 6 is a bottom plan view of another modified form of impression memher, and Fig. 7 is a sectional view along the. Erie 77 of Fig. 6.: i

- In carrying out my invention I may make 4 use of any of a" number of tensile or coingression testing machines.

Itwill be un-,

erstood therefore that I do'not confine my self to the particular type of machine disclosed herein, since it will be obvious that the attachment may be made to machines of other thanthe form shown herein.

Referring now to Fig.'1--it will be seen I have shown two stationary supports or, usrights 1 and 2 respectively'whic bear a.

shaped supporting member 3.' The latter. is

Specification of Letters Patent,

7 this t 'pe. crossfh Patented new 8, 191a.

mmit filed m a, 1 914. se m amma designed'to i'fi rnish a support for the block, 7 it ofimetali to beftested. At 5 and 6 I have indicated novable members of'the testing machine, These members may actuated 10y ,any; suititblepbhver means "such. as that ordinarily empled in'testin ma-chines of Inste' which is best illustrated in Fig.3. 'iThis'bar has ',a'-'body portion" 7 and :isfprovidedwith tel-grooves "5 :endftongues 7 a arrangedito ftndfiti them m s lfi. .6 R e ti ly- The body'portion is provided with threaded bores at each .endari anged ,regeive the cross bar 7 is rovided with an extension v of using-t e"connecting ar I make use of a spec alcrossfbar j 8 for ecurely'fastening the cross' bar .to the members 5 and 6. The underside of ,9 which hassa cy indrical threaded portion 9. The latter is designed to receive a hemispherical cap 10 whose upper edge is made of hexagonal shape in order to facili-- tate the .turnmg of the cap. As will be plate 12 is placed within the cap 10 in close en 'a ement with the end-of the threaded cylin rlcal extension 9". The bearing-plate 12 isprovided with'a" recess in its bottom of conformto the contour of the is then set in operation so that the members 5 and 6 v are drawn downwardly with a given force, the bore 11 is pressed into the previously machined upper surface 'ofthe ,block 4 and willleave impressions such as those shown at 13. In making the tests, the

; ,block is shifted so as to provide a plurality of impressions. The hardness of e metal seen from-Fig. 3 the cap is .providedwith a circular recess through which the end of a hardened steel. bore 11 projects. r A bearing is inversely proportional tothe diameter of the impresslons.

' Insteadbf using a separate bore-such as that shown at11 and a plate 12, I may make the im ression'me'mber and the plate inten Figs. 4 a'nd5 I have shown an impression member 14 which is integral with the plate 14. -The cap 10 ma be removed and this device used in lieu 0 :t ilfl andplate. I

' In' Fi s; 6 and -7 I'have- 'shown another modifie lform. iii-which the. impreion fi ff ing a fiat bsfe I claim:

member 15 is in the fhrmpia uprights, a-gietacheb fi'bm s ha'r partied by 'eaid ov bletmeinbers, sai djcrossgbar hay,-

cap having n a e 1 "chig hifi I 2; The .wmbinatidn wifih a; testing matio eiygi lprights and memv here-movable relatifely thereto of a station- 1 jar? Work. support eemiedby said stationary "iipiigh'b5fa"detachable cjfbes bar carried by said movable members, said cross bar having -an extension on its bottom prgvided with a cylindrical threaded encha hollow cap having a threaded. portion arranged to engage said threaded end; said cap having [a eentl al eil cuhir epening' in its bottom,, a iqn "bfi mip d i I j with "af' cyli dr'ica'l thre" tied, end *a'" libllow F thfead'ed poflgi'on aifl agliged w thr ade i nesaid; a p-ha g apentral ofieijiiig in its bottom, anYim' [spherical hardened hall disposed in said cir- 19 13 1 openi a'portion {if thebell projecitingthrough the dpeziin'g, and a bearing l plefie disposed between theball and the end theball." e

' GEORGESEPTIMUSEVANS; -Witnesses;' I

' H. COPELAND,

SAM; C. Wnmrmml.

o l'j cents n, y -a r'e slng the commmmegpr 2 m, E wg ington, D. O, 

